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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '4b365e7610a6afde63d9b460c07697f525c0cb3d4fb42196e84b58eb24f8f813' 
  AND token = 'UzSsNu13G+95sWnh3HuS+UQwROvo5d92jXtekwtF+HU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}